After that, create several new FAT32 partitions in Disk Utility; one for Windows 7, one for Ubuntu 10.04, and one for Ubuntu's swap space. Insert the Windows 7 system DVD, reboot the Mac, and you'll see this on first power-up. The icon on the far right worked for us. Once you're done, you'll still need Boot Camp, but only for the MacBook drivers. From the Windows 7 desktop, install Boot Camp from the Mac OS X 10.6 Snow Leopard DVD. Two operating systems down, one to go. Now it's time to install Linux. We'll use an Ubuntu CD made from a free .iso image on Ubuntu's Web site; select the Linux icon on the right to begin. Here's where things get a little tricky. We're going to choose the Specify Partitions Manually (Advanced) option. It's not difficult; we'll just go slowly here. We're going to prepare two of the partitions: /dev/sda4 for the OS, and /dev/sda5 for the swap space. Once the partitions are set up, Ubuntu will install normally. Whenever you power on the machine, you'll be able to choose from Mac OS X, Windows 7, or Ubuntu 10.04 (pictured). Done!